As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 1740 BUF-PHL - EMERGENCY LANDING - ON APPROACH FROM BUF TO PHL, CREW STATED LOSS OF GREEN HYDRAULIC SYSTEM. ACFT LANDED SAFELY AND TAXIED TO THE GATE UNDER ITS OWN POWER. MAINTENANCE REMOVED AND REPLACED THE LT YAW DAMPER ACTUATOR. OPERATIONAL AND LEAK CHECKS WERE GOOD. (S)